Though the NPD Group decided long ago to keep data from its monthly sales numbers secret from the general public, some specific sales information for October's heavy hitters were revealed in the company's monthly research email.

The NPD Group has released its monthly report, outlining the top ten selling games for the month of June 2011. L.A. Noire retained its hold on the list, with Duke Nukem Forever coming in at second spot, and Infamous 2 in third.